Comment # 16 on bug 991334 from Stefan Dirsch

Looks like I can reproduce that issue. Instead of automatically selecting
Mesa-libEGL1 package in order to sustain the libEGL.so.1 requirement

  zypper rm nvidia-glG04 (providing libEGL.so.1)

just removes any package depending on it. IIRC this behaviour has been
different in the past, i.e. zypper rm automatically selected the package which
provided that requirement.

How come that the customer ran into that situation? Most likely the NVIDIA repo
has been added already during installation, so the drivers were already
autoselected during installation. And therefore dependancies to libEGL.so.1
were already satisfied by nvidia-glG04 package coming from the NVIDIA repo.

Setting NEEDINFO to our zypper guys.